An iceberg consists of frozen freshwater that has broken away from a glacier, and could be more than 15,000 years old. icebergs in the grand banks area are estimated to weigh between 100,000 and 200,000 tons. suppose a team of scientists aboard a research vessel operating in the grand banks area selects a random sample of 49 icebergs. the height is carefully measured for each, and the sample mean is

answer: sine

step-by-step explanation:

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116

1. perpendicular

2. parallel

3. perpendicular

sorry i just need to anwers this to get points

step-by-step explanation: